Okay here is the fun part, if we move the pentatonic scale position up a whole step (2 frets then play the scale we now have access to the B note ( 2nd) and more importantly the F# (Maj 6th) which
is the Dorian note.

Now lets see the the two scales side by side on the fretboard.

So by moving between the the 2 position you can play the Dorian mode by using the familiar pentationic scale.

To help you practice and get used to the sound of the Dorian mode i have a backing track that is great for playing practising using the method.